Here's a question I'd love to see someone answer. Is there a good way to simulate diamonds within Reality? I've been using glass with an IOR of 2.42 but it still ends up looking a lot like glass. I was thinkng that the use of thin film might help me get a bit of a rainbow sheen to them. On a similar note, I'd also be very interested if anyone had good settings for pearls as well.

Incidentally, is it better to use normal glass or 'hyper realistic' for the above? I recently picked up the Divine Hair from Rendo and I'm planning to render a pretty princess with a diamond tiara.